CN104718355B - Off-gas flows distribution system - Google Patents
Off-gas flows distribution system Download PDFInfo
- Publication number
- CN104718355B CN104718355B CN201380048591.3A CN201380048591A CN104718355B CN 104718355 B CN104718355 B CN 104718355B CN 201380048591 A CN201380048591 A CN 201380048591A CN 104718355 B CN104718355 B CN 104718355B
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- China
- Prior art keywords
- exhaust
- processing system
- waste gas
- gas
- dispersal device
- Prior art date
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Links
- 239000007789 gas Substances 0.000 claims abstract description 111
- 239000002912 waste gas Substances 0.000 claims abstract description 64
- 238000011282 treatment Methods 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 238000012805 post-processing Methods 0.000 claims abstract description 24
- 230000001788 irregular Effects 0.000 claims abstract description 16
- 239000002699 waste material Substances 0.000 claims description 31
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 abstract description 20
- 239000012530 fluid Substances 0.000 abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 239000004215 Carbon black (E152) Substances 0.000 description 7
- 239000000446 fuel Substances 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 239000004202 carbamide Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001869 rapid Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
- B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
- B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
- B01F25/431974—Support members, e.g. tubular collars, with projecting baffles fitted inside the mixing tube or adjacent to the inner wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
- B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
- B01F25/45211—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube the elements being cylinders or cones which obstruct the whole diameter of the tube, the flow changing from axial in radial and again in axial
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of exhausted gas post-processing system for being used to handle the waste gas as caused by engine, it includes the exhaust steam passage connected with engine；For the nozzle for putting into exhaust-gas treatment fluid in exhaust steam passage, mixing arrangement is located at nozzle downstream, and the mixing arrangement operationally mixes exhaust-gas treatment fluid and waste gas；Irregular shape exhaust-gas treatment substrate positioned at the downstream of mixing arrangement；And the dispersal device between mixing arrangement and irregular shape exhaust-gas treatment substrate.Dispersal device includes multiple discrete parts, and it is multiple different directions that each discrete part, which operationally guides the waste gas stream for flowing through dispersal device, and waste gas is separated into the whole surface generally flowed throughout irregular shape exhaust-gas treatment substrate.
Description
The cross reference of related application
This application claims be filed in the preferential of in September, the 2013 S. Utility application of 17 days the 14/028,645th
Power, and require to be filed in the interests of in September, 2012 U.S. Provisional Application No. of 18 days 61/702,507.Above-mentioned application it is complete
Portion discloses all to be introduced into herein by quoting.
Field
The present invention relates to a kind of off-gas flows distribution system.
Background
This section provides the background information for being related to the present invention, and the background information, which differs, is set to prior art.
Emission regulation demands rule engine has exhausted gas post-processing system, is discharged with eliminating or at least generally minimizing,
Such as particulate matter and NOxDischarge.In order to eliminate or reduce particulate matter and NOxDischarge, exhausted gas post-processing system can include useless
Gas disposal component, such as particulate filter (for example, diesel particulate filter (DPF)), SCR (SCR) component and
Diesel oil oxidation is catalyzed (DOC) component.
SCR components and DOC components generally work with injecting a reductant into together with the reductant injection system in waste gas stream,
To enter the preceding processing waste gas of SCR components or DOC components in waste gas.For SCR, including the reductant solution of urea is entering
It is injected into before SCR components in waste gas stream.For DOC, the hydrocarbon reducing agent of such as diesel oil is entering DOC components
It is injected into before in waste gas stream.
Because assembling limits, the exhaust-gas treatment component of such as SCR components or DOC components can be irregularly shaped.By
In the irregular shape of exhaust-gas treatment component, therefore, it is difficult to ensure that reducing agent exhaust-gas mixture is dispersed throughout irregular shape
The whole surface of the substrate of the catalyst coating of exhaust-gas treatment component.
General introduction
This section provides the overview of the present invention, and not the comprehensive disclosure of its gamut or its whole feature.
The present invention provides a kind of exhausted gas post-processing system, and it includes exhaust steam passage, the irregular shape connected with exhaust steam passage
Shape exhaust-gas treatment component and it is arranged on dispersal device in exhaust steam passage in the upstream position of emission-control equipment.Scattered dress
It is operationally multiple differences by the waste gas stream for flowing through dispersal device guiding to put including multiple discrete parts, each discrete part
Direction, waste gas is separated into the whole surface generally flowed throughout irregular shape exhaust-gas treatment component.
The present invention also provides a kind of exhausted gas post-processing system for being used to handle the waste gas as caused by engine, and it includes and engine
The exhaust steam passage of connection；For the nozzle for putting into exhaust-gas treatment fluid in exhaust steam passage, mixing arrangement is located at nozzle downstream,
The mixing arrangement operationally mixes exhaust-gas treatment fluid and waste gas；Irregular shape positioned at the downstream of mixing arrangement is given up
Gas disposal substrate；And the dispersal device between mixing arrangement and irregular shape exhaust-gas treatment substrate.Dispersal device bag
Multiple discrete parts are included, the waste gas stream for flowing through dispersal device guiding is operationally multiple different sides by each discrete part
To waste gas to be separated into the whole surface generally flowed throughout irregular shape exhaust-gas treatment substrate.
Finally, the present invention provide it is a kind of be used for handle as caused by engine waste gas exhausted gas post-processing system, it include with
The exhaust steam passage of engine connection；For the nozzle for putting into exhaust-gas treatment fluid in exhaust steam passage；Positioned at the mixed of nozzle downstream
Attach together and put, the mixing arrangement operationally mixes exhaust-gas treatment fluid and waste gas；Positioned at not advising for the downstream of mixing arrangement
Then shape exhaust-gas treatment substrate, it is convex that the irregular shape exhaust-gas treatment substrate includes at least the first salient angle, the second salient angle and the 3rd
Angle；And the taper dispersal device between mixing arrangement and irregular shape exhaust-gas treatment substrate.The dispersal device includes
Multiple perforation, the plurality of perforate for the waste gas stream for flowing through dispersal device to be guided is multiple different directions, and waste gas is disperseed
Generally to flow the whole surface throughout irregular shape exhaust-gas treatment substrate.Multiple perforation include directly dominating a part of give up
Gas towards the flowing of the first salient angle the first perforation, directly dominate a part of waste gas towards the second perforation of the second salient angle flowing and straight
Connect and dominate threeth perforation of a part of waste gas towards the flowing of the 3rd salient angle.
The further scope of application will become apparent in the description provided from here.Description and tool in this general introduction
Style is only for illustration purpose, it is not intended that limitation the scope of the present invention.
Accompanying drawing
Accompanying drawing as described herein is only used for the illustration purpose of selected embodiment and not all feasible implementation, it is not intended that
Limit the scope of the present invention.
Fig. 1 is the schematic diagram of exhaust after-treatment according to the principles of the present invention；
Fig. 2 is the stereogram for the part for showing exhaust pipe according to the principles of the present invention；
Fig. 3 is the side isometric view for the part for showing the exhaust pipe shown in Fig. 2；
Fig. 4 is provided in the side isometric view of the dispersal device in the part of exhaust pipe；
Fig. 5 is provided in the axial stereogram of the dispersal device in the part of exhaust pipe；
Fig. 6 is the stereogram of the dispersal device shown in Fig. 4 and Fig. 5；
Fig. 7 is the side isometric view of the dispersal device shown in Fig. 6；
Fig. 8 is the axial stereogram of the dispersal device shown in Fig. 7；
Fig. 9 A to Fig. 9 E show multiple stereograms of the dispersal device shown in Fig. 6 to Fig. 8；
Figure 10 shows another exemplary dispersal device according to the principles of the present invention；
Figure 11 shows the axial stereogram of the dispersal device shown in Figure 10；
Figure 12 shows to be arranged on the axial stereogram of the dispersal device shown in exhaust pipe, Figure 11；
Figure 13 shows the vertical of another exemplary dispersal device being arranged in exhaust pipe, according to the principles of the present invention
Body figure；
Figure 14 shows the side isometric view of dispersal device shown in Figure 13, being arranged in exhaust pipe；
The axial stereogram for the dispersal device that Figure 15 is shown in Figure 14, is arranged in exhaust pipe；
Figure 16 is the side isometric view of the dispersal device shown in Figure 13；
Figure 17 is the stereogram of the dispersal device shown in Figure 16；
Figure 18 is the axial stereogram of the dispersal device shown in Figure 17；And
Figure 19 A to Figure 19 E show multiple stereograms of the dispersal device shown in Figure 13 to Figure 18.
Part corresponding to corresponding reference expression through some views of accompanying drawing.
It is described in detail
Refer to the attached drawing, example embodiment will be more fully described now.
Fig. 1 schematically illustrates the waste gas system 10 according to the present invention.Waste gas system 10 comprises at least to be connected with fuels sources 14
Logical engine 12, fuels sources 14 will produce waste exhaust gases, the waste exhaust gases are discharged into exhausted gas post-processing system once consuming
In 18 exhaust steam passage 16.The downstream of engine 12 can set DOC components 20, DPF components 22 and SCR components 24.Although this hair
It is bright not need, but exhausted gas post-processing system 18 may further include the component of such as burner 26, be led to increase through waste gas
The temperature of the waste exhaust gases in road 16.The temperature of increase waste exhaust gases is advantageously implemented under cold weather conditions and in engine 12
The igniting of catalyst during startup, in DOC components 20 and SCR components 24, and trigger DPF22 regeneration when needed.
It can include the feeding pipe 27 of connection fuels sources 14 to burner 26, burner to provide fuel.
Discharged to help to reduce caused by engine 12, exhausted gas post-processing system 18 can include being used for exhaust-gas treatment
Fluid is ejected into nozzle 28 and nozzle 30 in waste gas stream periodically.As shown in figure 1, nozzle 28 can be located at DOC20 upstream,
And hydrocarbon exhaust treatment fluid is operationally sprayed, the hydrocarbon exhaust treatment fluid at least helps to reduce useless
NO in air-flowx, and raise the EGT of the regeneration for DPF22.In this respect, nozzle 28 by feeding pipe 32 and
It is in fluid communication with fuels sources 14, by the exhaust steam passage 16 of the hydrocarbon injection of such as diesel oil to DOC20 upstreams.Nozzle
28 can also be connected by return line 33 with fuels sources 14.Return line 33 allows any not to be injected into waste gas stream
Hydrocarbon is back in fuels sources 14.Through the liquid of the hydrocarbon of feeding pipe 32, nozzle 28 and return line 33
Stream also helps cooling nozzles 28, so that nozzle 28 will not overheat.Although not shown in accompanying drawing, nozzle 28 can be configured as
Including cooling jacket, the cooling jacket transmits cooling agent around nozzle 28 with cooling nozzles 28.
Nozzle 30 can be used to the exhaust-gas treatment fluid of such as urea being ejected into the waste gas positioned at SCR24 upstream positions
In passage 16.Nozzle 30 is connected by feeding pipe 36 with reducing agent tank 34.Nozzle 30 is also connected by return line 38 and case 34
It is logical.Return line 38 allows any urea not being injected into waste gas stream to be back in case 34.It is similar to nozzle 28, pass through into
The liquid stream of the urea on expects pipe road 36, nozzle 30 and return line 38 also helps cooling nozzles 30, so that nozzle 30 will not overheat.Should
It should be appreciated that the reducing agent in addition to listed reducing agent can also be used for the NO for reducing waste gasxContent.At waste gas
The different relative positions for managing device are also within the scope of the invention.
Fig. 2 to Fig. 5 shows the part 40 of exhaust steam passage 16.Part 40 can include linking together with characterizing portion 40
Multiple pipes and/or accessory 42,44 and 46.Inlet part 42 can be located immediately at the downstream of engine 12, and nozzle body 48 is set
Put here.In order to which nozzle 28 or nozzle 30 are attached into nozzle body 48, nozzle body 48 may include to be used for fanging noz(zle) 28
Or the hole 50 of nozzle 30.Housing 48 can tilt relative to inlet part 42, thoroughly to ensure to spray into waste gas stream by nozzle 30
In drop it is dispersed.It should be understood that although following description will generally refer to that the urea from nozzle 30 gives up
The injection of gas disposal fluid, and the use of SCR exhaust-gas treatments component 24 is referred to, but the present invention should not be limited to this.
Especially, it should be understood that in the case of without departing from the scope of the present invention, exhaust-gas treatment fluid can be hydrocarbon
Exhaust-gas treatment fluid, and exhaust-gas treatment component can be the DPF20 or DOC22 of catalyst coating.
In inlet part 42, the downstream of nozzle body 48, mixing arrangement 52 can be set.Mixing arrangement 52 is used to create
Through the turbulent flow of the waste gas of inlet part 42.In this respect, mixing arrangement 52 can include multiple disks 54, and it has fixed by difference
To thin slice 56.Each disk 54 can be installed to annular flange 58, and annular flange 58 can be soldered to inlet part 42
Inner surface 60.When off-gas flows pass through mixing arrangement 52, off-gas flows are deflected to different directions by thin slice 56, to create rapids
Stream.By creating the vortex of waste gas stream, the exhaust-gas treatment fluid being ejected into by nozzle 30 in waste gas stream can be uniformly dispersed
Into waste gas stream.Nozzle 30 is oriented with being directed towards mixing arrangement 52 from the drop that nozzle 30 projects, mixed to fall on
Attach together in the part put.Or drop can be injected into waste gas in the upstream position of mixing arrangement 52.
After waste gas stream passes through mixing arrangement 52, the mixture of waste gas and exhaust-gas treatment fluid passes through the pars intermedia of part 40
Divide 44.Center section 44 is for the present invention and non-required, but from allowing treated exhaust stream body and waste gas stream further
From the perspective of blending and react wherein, center section 44 can be required.Preferably as shown in figure 3, center section 44 is wrapped
Include the Part I 45 of radial dilatation, the housing 47 for supporting DOC20 or DPF22 and the Part II 49 radially reduced.
Through after center section 44, the exit portion 46 of waste gas stream entering part 40.
According to the present invention, dispersal device 62 can be arranged in exit portion 46.Exit portion 46 can be by immediately follows
It is arranged on the upstream of such as SCR24 exhaust-gas treatment component.As will be described below in more detail, exhaust-gas treatment component 24 can
To be irregularly shaped, to consider exhausted gas post-processing system 18 is being installed to the vehicle for needing exhaust after-treatment, peculiar to vessel drawn
Hold up or fixed engine using it is upper when assembling limitation.Preferably as shown in figure 5, SCR24 includes the substrate 64 of general triangular.
That is, substrate 64 includes three salient angles 66, salient angle 68 and salient angle 70.Further, preferably as shown in Fig. 2 the pipe 72 of exit portion 46
Deviate the center 74 of substrate 64.Pipe 72 can be off-center because the assembling needed for installation exhausted gas post-processing system 18 restricts
74。
Because pipe 72 deviates the center 74 of substrate 64, and because substrate 64 is irregular shape (for example, triangle), institute
It may not be fallen on the uniform air flow of waste gas stream in the whole surface of substrate 64.Therefore, it is not the whole surface quilt of substrate 64
The environmentally harmful composition of waste exhaust gases is reduced with waste gas stream is dealt with.Dispersal device 62 help make exhaust-gas treatment fluid and
The scattered whole surface throughout substrate 64 of the mixture of waste gas.
Preferably as shown in Fig. 6 to Fig. 9 E, dispersal device 62 includes first end 76 and the second end 78.Waste exhaust gases can be from
First end 76 arrives the second end 78 through dispersal device 62.Column ring 80 is formed in first end 76, column ring 80 can be welded
The inner surface 82 of exit portion 46 is connected to, dispersal device 62 is fixed on exit portion 46.The circle of column ring 80 can be surrounded
Week sets multiple otch 84.Otch 84 be allowed at first end 76 into dispersal device 62 a part of waste exhaust gases relative to
Column ring 80 disperses radially outward.By allowing a part of waste exhaust gases to spill dispersal device 62 through otch 84, in waste gas
Back pressure in system 10 reduces.
Do not pass through otch 84 and leave the remainder waste exhaust gases of dispersal device 62 and scattered dress is left at the second end 78
Put 62.Multiple deflection components 86 can be formed at the second end 78.Deflection component 86 is formed relative to the footpath of column ring 80
To the outside smooth expansion in ground.
As described above, the substrate 64 of irregular shape can be designed as having three salient angles 66, salient angle 68 and salient angle 70.
The quantity of deflection component 86 is generally equal to the quantity of the salient angle of substrate 64.In this respect, each of deflection component 86 is designed to
It is each salient angle 66, salient angle 68 and salient angle 70 towards substrate 64 by the off-gas flows guiding through discrete part 62.For example, the
One deflection component 88 can operationally be such that waste exhaust gases are deflected towards salient angle 66；Second deflection component 90 can operationally make
Waste exhaust gases deflect towards salient angle 68；And the 3rd deflection component 92 can operationally make waste exhaust gases inclined towards salient angle 70
Turn.By deflecting waste gas by this way, the mixture of exhaust-gas treatment fluid and waste exhaust gases can more reliably fall on base
In the whole surface at bottom 64.It should be understood, however, that in the case of without departing from the scope of the present invention, as long as waste exhaust gases
More effectively deflected so that throughout the whole surface of substrate 64, then any number of deflection component 86 can be used.
As shown in figure 5, and as described above, pipe 72 can deviate the center 74 of substrate 64.Because dispersal device 62 is mounted
In the pipe 72 of deviation, so deflection component 90 may be not enough to individually make waste exhaust gases deflect towards salient angle 68.In order to enter
One step helps deflection component 90 that waste exhaust gases are deflected into enough amounts, dispersal device towards the salient angle 68 farthest from dispersal device 62
62 can also include the flange 94 extended radially inwardly for the upstream for being arranged on deflection component 86.
The longitudinal axis of the flange 94 extended radially inwardly towards dispersal device 62 extends radially inward, and is formed
In column ring 80, the position that causes waste exhaust gases to be deflected towards the salient angle 68 farthest from dispersal device 62.Although the present invention is not
Need, but the flange 94 extended radially inwardly can include multiple holes or the slit to be worked in a manner of with the identical of otch 84
96.That is, slit 96 allows a part of waste exhaust gases radially outward to spill dispersal device 62, to reduce the back of the body in waste gas system 10
Pressure.
Figure 10 to Figure 12 shows another dispersal device 100 according to the principles of the present invention.It is similar with dispersal device 62,
Dispersal device 100 includes column ring 80, for dispersal device 100 to be welded to the inner surface 82 of exit portion 46.Column ring
80 downstream is the flange 102 extended radially inwardly.The flange 102 that extends radially inwardly and the flange 94 that extends radially inwardly are not
Same to be, the flange 102 does not include slit 96.Nevertheless, the function of the flange 102 extended radially inwardly and the work(of flange 94
Can be identical.That is, flange 102 be located at column ring 80, make the maximum amount of waste exhaust gases towards the substrate farthest from dispersal device 100
The position of 64 surface deflections.Especially, using Fig. 2 as an example, flange 102 is arranged to make waste exhaust gases towards substrate 64
Salient angle 68 deflect.
The downstream of flange 102 can set multiple otch 84, and otch 84 allows waste exhaust gases radially from dispersal device 100
Spill, and reduce the back pressure in waste gas system 10.In the downstream of otch 84, deflection component 104 is set.With dispersal device 62,
The deflection component 86 to be extended radially outwardly from column ring 80 is compared, and deflection component 104 is with similar to the flange extended radially inwardly
102 mode extends radially inwardly.When waste exhaust gases are close to deflection component 104, waste exhaust gases can be radially outward deflection
With through the opening 106 corresponding to each deflection component 104.Each deflection component 104 can be with salient angle 66, the salient angle of substrate 64
68 and salient angle 70 it is corresponding, and guide waste gas to be flowed towards the salient angle 66, salient angle 68 and salient angle 70 of substrate 64.
In order to further help to guide waste exhaust gases can individually be adjusted towards salient angle 66, salient angle 68 and salient angle 70 respectively
Whole each deflection component 86 or deflection component 104.More particularly, for example, each deflection component 86 or the radial direction of deflection component 104 to
Amount that is outer or extending internally can all be adjusted to capture the off-gas flows of greater or lesser amount.This can favorably make a greater amount of
Air-flow deflects towards the salient angle farthest from dispersal device 62 or dispersal device 100, or can be advantageous to make more a small amount of waste gas gas
Stream deflects into specific salient angle.In order that a greater amount of off-gas flows deflection, deflection component 86 or deflection component 104 can be than them
His deflection component 86 or deflection component 104 are radially outward or the bigger scope that extends internally.It is on the contrary, if it is desire to more a small amount of
Off-gas flows, then deflection component 86 or deflection component 104 can than other deflection components 86 or deflection component 104 radially to
The outer or smaller scope that extends internally.When engine exhaust passes through dispersal device 62 and dispersal device 100, waste gas is further helped
Other alternatives of the mixing for the treatment of fluid and engine exhaust are slightly to reverse one or each deflection component 86 or deflection
Part 104.That is, not simply by deflection component 86 or deflection component 104 from ring 80 radially inward or radially outwardly
Orientation, but at least one in deflection component 86 or deflection component 104 can slightly be reversed, to change deflection component 86
Or the orientation of deflection component 104.
The another method for individually adjusting each deflection component 86 or deflection component 104 is to increase each deflection component on demand
86 or the surface area of deflection component 104.For example, flow to specific position if necessary to larger amount of waste gas, then deflector
The size of part 86 or deflection component 104 can increase.If on the contrary, it is expected small amount of waste gas gas in specific opening position
Stream, then the size of deflection component 104 can reduce.For example, it is desirable to as shown in Figure 8, it can be seen that maximum deflection component 86 is
Second deflection component 90.Because deflection component 90 is responsible for making waste exhaust gases inclined towards the salient angle 68 farthest from dispersal device 62
Turn.Because salient angle 66 and salient angle 70 in terms of with the waste exhaust gases being distributed to thereon need not with the assistance as salient angle 68,
So the first deflection component 88 and the 3rd deflection component 92 need not be big as the second deflection component 90.
With reference now to Figure 13 to Figure 19, illustrate another example dispersal device 200.With dispersal device 62 and dispersal device
100 is similar, and dispersal device 200 includes the column mounting ring 202 positioned at its first end 204.Taper is formed in the second end 206
Arrangement for deflecting 208.Arrangement for deflecting 208 includes multiple perforation 210, and the plurality of perforation 210 allows waste exhaust gases to flow through arrangement for deflecting
208, it is scattered to be radially outward from arrangement for deflecting 208.By radially outwardly radially disperseing waste gas from arrangement for deflecting 208
Gas, waste exhaust gases more easily can be substantially fallen in the whole surface of substrate 64.
In order to further help to be directed across the waste exhaust gases of arrangement for deflecting 208, each perforation 210 can be oriented
Specific direction.For example, in order to help to make waste exhaust gases to be deflected towards the first salient angle 66, formed each on upper surface 212
Perforation 210 can be oriented the general direction where salient angle 66.Similarly, the downside surface in arrangement for deflecting 208 is formed
Perforation 210 on 214 may be oriented towards salient angle 70, and be formed arrangement for deflecting 208, relative with downside surface 214
Side 216 on perforation 210 may be oriented towards salient angle 68.Anyway, it should be understood that, each perforation
210 can be oriented the specific direction that off-gas flows are expected to be directed to.
In each above-mentioned embodiment, it can be seen that exit portion 46 includes recess 51 formed therein.Recess
51 be used to before the dispersal device 62, dispersal device 100 or dispersal device 200 that off-gas flows enter difference be off-gas flows
Additional turbulence is provided.The length of recess 51 is variable, but any length for the turbulent flow for being enough to provide abundance for waste gas stream can be used.Examine
Consider recess 51, each dispersal device 62, dispersal device 100 and dispersal device 200 can include hole formed therein
300, hole 300 allows each dispersal device 62, dispersal device 100 and dispersal device 200 to be pacified in a manner of overlay recess 51
Dress.
The description of above-mentioned embodiment is provided with the purpose of illustration and description.This is not intended to the limit present invention or limitation
The present invention.The single component or feature of particular implementation are generally not constrained to the particular implementation, still, even if not having
It is specifically illustrated in or describes, under applicable circumstances, they is interchangeable and can be used in selected embodiment.It is above-mentioned
It can also be varied in many ways.The change is not to be regarded as deviateing the present invention, and all such modifications are all included in
In the scope of the present invention.
Claims (13)
1. a kind of exhausted gas post-processing system, it is included：
Exhaust steam passage, it has circular cross-section and longitudinal axis；
Irregular shape exhaust-gas treatment component, it is connected with exhaust steam passage, and wherein the surface of exhaust-gas treatment component includes a part,
The part is arranged to other all parts than the surface further from the longitudinal axis of exhaust steam passage；And
Dispersal device, it is arranged in exhaust steam passage, the upstream position in exhaust-gas treatment component, and dispersal device is pacified including column
Ring and multiple deflection components are filled, waste gas stream is operationally being uniformly dispersed to flow throughout waste gas by each deflection component
Handle one of the partial exhaust stream, plurality of deflection component that exhaust steam passage is directed to flow past on the direction on the surface of component
Be shaped as it is different from other deflection components in multiple deflection components, with help by a part of waste gas stream guiding be towards described in
The part farthest from longitudinal axis on surface.
2. exhausted gas post-processing system according to claim 1, wherein, column mounting ring includes upstream end and downstream, and
And each deflection component radially downstream extends from the downstream of column mounting ring.
3. exhausted gas post-processing system according to claim 1, wherein, the deflector to be extended radially outwardly relative to column ring
Part is circumferentially separated.
4. exhausted gas post-processing system according to claim 1, wherein, deflection component relative to column mounting ring radially-inwardly
Extension.
5. exhausted gas post-processing system according to claim 1, wherein, column mounting ring includes being arranged around its circumference
Multiple first otch, the plurality of first otch allow a part of waste gas to spill dispersal device before the guiding of deflected part.
6. exhausted gas post-processing system according to claim 1, wherein, column mounting ring is convex including extending radially inwardly
Edge, the flange are arranged to guide waste gas stream.
7. exhausted gas post-processing system according to claim 6, wherein, column mounting ring is convex including extending radially inwardly
Edge, the flange include multiple second otch formed therein.
8. exhausted gas post-processing system according to claim 1, wherein, exhaust steam passage includes recess, and the recess radially contracts
Small exhaust steam passage, and column mounting ring includes hole, the hole overlay recess.
9. exhausted gas post-processing system according to claim 1, further comprising waste exhaust gases electric hybrid module, it is located at waste gas
In passage, in the upstream position of dispersal device.
10. exhausted gas post-processing system according to claim 9, wherein, exhaust steam passage includes being used to install treated exhaust stream
The nozzle body of body nozzle, the nozzle body are located at the upstream of electric hybrid module.
11. exhausted gas post-processing system according to claim 1, wherein, exhaust-gas treatment component is SCR
(SCR) substrate.
12. exhausted gas post-processing system according to claim 1, wherein, exhaust-gas treatment component is triangle, and it includes first
Salient angle, the second salient angle and the 3rd salient angle；And
Deflection component include being used for guiding a part of waste gas towards the first deflection component of the first salient angle flowing, for guiding one
Divide waste gas towards the second deflection component of the second salient angle flowing and for guiding a part of waste gas towards the flowing of the 3rd salient angle
3rd deflection component.
13. exhausted gas post-processing system according to claim 1, wherein, each deflection component is individually adjustable, to help
Dominate the direction of waste gas flowing.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261702507P | 2012-09-18 | 2012-09-18 | |
| US61/702,507 | 2012-09-18 | ||
| US14/028,645 | 2013-09-17 | ||
| US14/028,645 US9518496B2 (en) | 2012-09-18 | 2013-09-17 | Exhaust gas flow distribution system |
| PCT/US2013/060263 WO2014047091A1 (en) | 2012-09-18 | 2013-09-18 | Exhaust gas flow distribution system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104718355A CN104718355A (en) | 2015-06-17 |
| CN104718355B true CN104718355B (en) | 2017-11-24 |
Family
ID=50274685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380048591.3A Active CN104718355B (en) | 2012-09-18 | 2013-09-18 | Off-gas flows distribution system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9518496B2 (en) |
| JP (1) | JP2015528543A (en) |
| KR (1) | KR20150054853A (en) |
| CN (1) | CN104718355B (en) |
| BR (1) | BR112015006062A2 (en) |
| DE (1) | DE112013004524T5 (en) |
| WO (1) | WO2014047091A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008001547U1 (en) | 2007-07-24 | 2008-04-10 | Emcon Technologies Germany (Augsburg) Gmbh | Assembly for introducing a reducing agent into the exhaust pipe of an exhaust system of an internal combustion engine |
| CN106414931B (en) | 2014-06-03 | 2019-06-28 | 佛吉亚排放控制技术美国有限公司 | The component of mixer and dispensing mechanism Tapered Cup |
| US9828897B2 (en) | 2015-04-30 | 2017-11-28 | Faurecia Emissions Control Technologies Usa, Llc | Mixer for a vehicle exhaust system |
| WO2016176078A1 (en) | 2015-04-30 | 2016-11-03 | Faurecia Emissions Control Technologies, Usa, Llc | Mixer with integrated doser cone |
| WO2016176076A1 (en) | 2015-04-30 | 2016-11-03 | Faurecia Emissions Control Technologies, Usa, Llc | Full rotation mixer |
| US9719397B2 (en) | 2015-04-30 | 2017-08-01 | Faurecia Emissions Control Technologies Usa, Llc | Mixer with integrated doser cone |
| KR102414068B1 (en) | 2016-10-21 | 2022-06-28 | 포레시아 이미션스 컨트롤 테크놀로지스, 유에스에이, 엘엘씨 | reducing agent mixer |
| US20190388851A1 (en) * | 2018-06-25 | 2019-12-26 | Faurecia Systemes D'echappement | Large engine mixer for exhaust system |
| US10787946B2 (en) | 2018-09-19 | 2020-09-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated dosing mixer |
| CN110735701B (en) * | 2019-11-12 | 2021-04-06 | 无锡威孚力达催化净化器有限责任公司 | Multi-valve flow-gathering type soot rotational flow mixing partition plate and exhaust aftertreatment device |
| US11428139B2 (en) | 2020-12-09 | 2022-08-30 | Tenneco Automotive Operating Company Inc. | Internal swirler tube for exhaust catalyst |
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| US5593645A (en) * | 1994-04-11 | 1997-01-14 | Scambia Industrial Developments Aktiengesellschaft | Catalytic converter for the catalytic treatment of exhaust gas |
| KR20000034101A (en) * | 1998-11-27 | 2000-06-15 | 김태구 | Catalytic converter |
| US6712869B2 (en) * | 2002-02-27 | 2004-03-30 | Fleetguard, Inc. | Exhaust aftertreatment device with flow diffuser |
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| DE4203807A1 (en) | 1990-11-29 | 1993-08-12 | Man Nutzfahrzeuge Ag | Catalytic nitrogen oxide(s) redn. appts. for vehicles - comprises flow mixer urea evaporator hydrolysis catalyst, for exhaust gas treatment |
| WO1997035107A1 (en) | 1996-03-18 | 1997-09-25 | Cheng Theodore Yi Tze | Gas swirling device for internal combustion engine |
| US6833116B2 (en) | 2000-12-15 | 2004-12-21 | Delphi Technologies, Inc. | Variable flow regulator for use with gas treatment devices |
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| EP1514591A1 (en) | 2003-09-15 | 2005-03-16 | J. Eberspächer GmbH & Co. KG | Hot gas flow channel, especially within an exhaust system of an internal combustion engine upstream of a catalyst |
| US7581387B2 (en) | 2005-02-28 | 2009-09-01 | Caterpillar Inc. | Exhaust gas mixing system |
| EP2546489A1 (en) | 2007-05-15 | 2013-01-16 | Donaldson Company, Inc. | Exhaust gas flow device |
| US7814745B2 (en) * | 2007-07-17 | 2010-10-19 | Ford Global Technologies, Llc | Approach for delivering a liquid reductant into an exhaust flow of a fuel burning engine |
| DE102007052262B4 (en) | 2007-11-02 | 2023-11-02 | Bayerische Motoren Werke Aktiengesellschaft | Device for mixing and/or evaporating a reducing agent and device for applying a reducing agent to an exhaust gas stream |
| US7971579B2 (en) | 2008-02-26 | 2011-07-05 | Cummins Intellectual Properties, Inc. | Air-exhaust mixing apparatus |
| US8297050B2 (en) | 2008-07-11 | 2012-10-30 | GM Global Technology Operations LLC | Nozzle diffuser mixer |
| US8935918B2 (en) | 2010-04-23 | 2015-01-20 | GM Global Technology Operations LLC | Reconfigurable mixer for an exhaust aftertreatment system and method of using the same |
| US20120151902A1 (en) | 2010-12-16 | 2012-06-21 | Caterpillar Inc. | Biased reductant mixer |
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2013
- 2013-09-17 US US14/028,645 patent/US9518496B2/en not_active Expired - Fee Related
- 2013-09-18 BR BR112015006062A patent/BR112015006062A2/en not_active IP Right Cessation
- 2013-09-18 CN CN201380048591.3A patent/CN104718355B/en active Active
- 2013-09-18 WO PCT/US2013/060263 patent/WO2014047091A1/en active Application Filing
- 2013-09-18 KR KR1020157007437A patent/KR20150054853A/en not_active Application Discontinuation
- 2013-09-18 JP JP2015532156A patent/JP2015528543A/en not_active Withdrawn
- 2013-09-18 DE DE112013004524.9T patent/DE112013004524T5/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5593645A (en) * | 1994-04-11 | 1997-01-14 | Scambia Industrial Developments Aktiengesellschaft | Catalytic converter for the catalytic treatment of exhaust gas |
| KR20000034101A (en) * | 1998-11-27 | 2000-06-15 | 김태구 | Catalytic converter |
| US6712869B2 (en) * | 2002-02-27 | 2004-03-30 | Fleetguard, Inc. | Exhaust aftertreatment device with flow diffuser |
Also Published As
| Publication number | Publication date |
|---|---|
| US9518496B2 (en) | 2016-12-13 |
| CN104718355A (en) | 2015-06-17 |
| KR20150054853A (en) | 2015-05-20 |
| JP2015528543A (en) | 2015-09-28 |
| BR112015006062A2 (en) | 2017-07-04 |
| WO2014047091A1 (en) | 2014-03-27 |
| DE112013004524T5 (en) | 2015-06-03 |
| US20140079599A1 (en) | 2014-03-20 |
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